Energy
19 columns
110 rows
8 formats

Energy Management System (EMS) State Estimation

This dataset provides detailed results from Energy Management System (EMS) state estimation runs, including bus voltage profiles, transmission line power flows, generator dispatch levels, network topology status, and bad data detection flags. It enables situational awareness, operational monitoring, and advanced analytics for power grid reliability and efficiency.

last updated 2 Nov 2025
by GoMask

The brief that made it

Real-time grid monitoring and situational awareness

Sample rows

preview · 8 of 110 rows · all 19 columns

estimation_idstring	topology_statusstring	bus_voltage_magnitudefloat	bad_data_flagboolean	estimator_statusstring	estimation_timestampdatetime	bus_idstring	bus_voltage_anglefloat	line_idstring	line_from_bus_idstring	line_to_bus_idstring	line_flow_mwfloat	line_flow_mvarfloat	generator_idstring	generator_bus_idstring	generator_output_mwfloat	generator_output_mvarfloat	bad_data_detailsstring	operator_notesstring
EST001	normal	228.4	false	converged	2024-06-04T03:17:22	BUS_A1	1.2	LN_01	BUS_A1	BUS_B2	54.8	13.2	GEN_G1	BUS_A1	44.5	7.1	blank	Routine check: voltage nominal and flows within limits.
EST002	normal	145	false	converged	2024-06-04T07:09:41	BUS_B2	0.3	blank	blank	blank	blank	blank	blank	blank	blank	blank	blank	Bus B2 at standard voltage. No issues detected.
EST003	normal	330.2	false	converged	2024-06-04T13:23:10	BUS_C3	45	LN_03	BUS_C3	BUS_D4	180.1	60.3	GEN_G2	BUS_C3	205.7	42.6	blank	High voltage operation; generator output matches predicted ramp.
EST004	unknown	0	true	error	2024-06-04T00:15:10	BUS_D4	-360	blank	blank	blank	blank	blank	blank	blank	blank	blank	Sensor error detected: voltage reading zero at BUS_D4.	Manual inspection required for bus anomaly at midnight.
EST005	normal	131.6	false	converged	2024-06-04T15:44:25	BUS_E5	3.4	blank	blank	blank	blank	blank	GEN_G3	BUS_E5	7.2	2.9	blank	Generator on standby; voltage at lower transmission level.
EST006	normal	230.1	false	converged	2024-06-04T05:55:49	BUS_F6	0.8	LN_06	BUS_F6	BUS_G7	52.5	16	blank	blank	blank	blank	blank	Transmission line LN_06 active; flows nominal.
EST007	normal	222.7	false	converged	2024-06-04T20:35:01	BUS_G7	-5	LN_07	BUS_G7	BUS_H8	60.7	10.2	GEN_G4	BUS_G7	50.1	18.7	blank	Evening ramp, generator active, voltage slightly depressed.
EST008	normal	400	false	converged	2024-06-04T11:17:13	BUS_H8	360	LN_08	BUS_H8	BUS_I9	305	72.8	GEN_G5	BUS_H8	305	65	blank	Peak boundary voltage and generator output; rare cluster event.
EST009	split	123	true	not_converged	2024-06-04T02:29:39	BUS_I9	-89.9	blank	blank	blank	blank	blank	blank	blank	blank	blank	Extreme angle detected at BUS_I9; possible topology split.	Topology split event; voltage anomaly requires follow up.
EST010	normal	132.2	false	converged	2024-06-04T18:21:11	BUS_J10	2.7	LN_10	BUS_J10	BUS_K11	51.2	14.6	blank	blank	blank	blank	blank	Line LN_10 operational; bus voltage and flows nominal.
EST011	normal	221.2	false	converged	2024-06-04T13:54:09	BUS_K11	0.2	blank	blank	blank	blank	blank	GEN_G6	BUS_K11	12.1	-4	blank	Compensating generator active; negative MVAR for reactive correction.
EST012	normal	360	false	converged	2024-06-04T21:07:03	BUS_L12	270	LN_12	BUS_L12	BUS_M13	180.9	61.2	GEN_G7	BUS_L12	170.3	30.8	blank	Boundary voltage and generator ramp matched; evening peak.
EST013	normal	220	false	converged	2024-06-04T16:09:45	BUS_M13	1	blank	blank	blank	blank	blank	blank	blank	blank	blank	blank	Bus at nominal voltage; midday load steady.
EST014	islanded	110	false	not_converged	2024-06-04T06:34:23	BUS_N14	-25	LN_14	BUS_N14	BUS_O15	42.9	12.3	blank	blank	blank	blank	blank	Islanded topology detected; voltage and flows reduced.
EST015	normal	370	false	converged	2024-06-04T22:58:29	BUS_O15	360	LN_15	BUS_O15	BUS_P16	300	72.4	GEN_G8	BUS_O15	295.2	63.9	blank	High voltage and generator output; rare boundary condition.
EST016	normal	220.2	false	converged	2024-06-04T12:02:38	BUS_P16	0.6	blank	blank	blank	blank	blank	blank	blank	blank	blank	blank	Routine bus voltage check; operation nominal.
EST017	normal	208.7	false	converged	2024-06-04T08:24:17	BUS_Q17	4.9	blank	blank	blank	blank	blank	blank	blank	blank	blank	blank	Bus Q17 within nominal range; load steady.
EST018	split	1	true	error	2024-06-04T19:11:58	BUS_R18	-0.1	blank	blank	blank	blank	blank	blank	blank	blank	blank	Sensor anomaly detected: voltage near zero at BUS_R18.	Maintenance dispatch recommended; voltage anomaly and split topology.
EST019	unknown	84	true	error	2024-06-04T14:48:15	BUS_S19	180	blank	blank	blank	blank	blank	blank	blank	blank	blank	Suspect reading: BUS_S19 voltage far below expected.	Operator flagged anomaly for review; voltage extreme.
EST020	normal	145	false	converged	2024-06-04T10:22:05	BUS_T20	5	blank	blank	blank	blank	blank	GEN_G9	BUS_T20	9	3.4	blank	Generator at standby; bus voltage normal.

What the 110 rows show

from the 110-row sample

Split (topology status) stands out: 11 of its 11 rows have bad_data_flag = true, against 10 of 99 for the rest.

19%bad_data_flag = true
220.0median bus_voltage_magnitude
1.3median bus_voltage_angle
56.7median line_flow_mw
16.5median line_flow_mvar
44.8median generator_output_mw

Bad data flag rate by topology_statusbad_data_flag = true

Split (topology status)'s mean bus_voltage_magnitude is 94.8, against 235.8 for normal, 111.9 for islanded and 36.3 for unknown.

bus_voltage_magnitude110 rows, in bands of 50

Median 220.0, from 0.0 to 400.0.

estimator_status110 rows · 3 values

converged80
not_converged19
error11

19 columns by typefrom the column list below

string 11
float 6
datetime 1
boolean 1

Columns

19 columns in four groups

blueprint · 19 columns
column	type	description	example
Text 11 columns
`estimation_id`	string	Unique identifier for each state estimation rununique	EST001
`bus_id`	string	Unique identifier for the bus in the power system	BUS_A1
`line_id`	string	Unique identifier for the transmission lineoptional	LN_01
`line_from_bus_id`	string	Identifier of the bus where the line originatesoptional	BUS_A1
`line_to_bus_id`	string	Identifier of the bus where the line terminatesoptional	BUS_B2
`generator_id`	string	Unique identifier for the generatoroptional	GEN_G1
`generator_bus_id`	string	Identifier of the bus to which the generator is connectedoptional	BUS_A1
`topology_status`	string	Status of the network topology (e.g., normal, islanded, split)normal · islanded · split · unknown	normal
`bad_data_details`	string	Description or identifier of the detected bad data (if any)optional	Sensor error detected: vo…
`estimator_status`	string	Status of the state estimator (e.g., converged, not_converged, error)converged · not_converged · error	converged
`operator_notes`	string	Additional notes or comments from the system operatoroptional	Routine check: voltage no…
Numbers 6 columns
`bus_voltage_magnitude`	float	Estimated voltage magnitude at the bus (in kV)0 or more	228.4
`bus_voltage_angle`	float	Estimated voltage angle at the bus (in degrees)-360 to 360	1.2
`line_flow_mw`	float	Estimated real power flow on the line (in MW)optional	54.8
`line_flow_mvar`	float	Estimated reactive power flow on the line (in MVAR)optional	13.2
`generator_output_mw`	float	Estimated real power output of the generator (in MW)0 or more · optional	44.5
`generator_output_mvar`	float	Estimated reactive power output of the generator (in MVAR)optional	7.1
Dates and times 1 column
`estimation_timestamp`	datetime	Date and time when the state estimation was performed	2024-06-04T03:17:22
True or false 1 column
`bad_data_flag`	boolean	Indicates if bad data was detected in the estimation run	false

Use it for

An energy dashboard
The bad_data_flag rate, bus_voltage_magnitude by topology_status and a breakdown of estimator_status. Excel, Power BI or Tableau.
Why do 21 of 110 rows have bad_data_flag = true?
A root-cause class exercise
Hand out the rows and one question. The answer is in the data, not in the brief.
Estimations110
EST001228.4normal
EST0040unknown
EST009123split
A software demo
Believable estimations with estimation_timestamp, bus_id and bus_voltage_magnitude to fill a screen in front of a buyer.

This dataset110 rows19 columns

Yours1,000 rows19 columns

blueprint · energy-management-system-ems-state-estimation

Behind this dataset

Same schema. As many rows as you need.

These 110 rows came out of a blueprint — 19 columns with generation rules behind each one. Open it in Data Factory to retune a column, add your own, wire in foreign keys, and run it at the size you actually need.

Rules it was built with

Solution timestamp (typically every 1-5 minutes)
Bus voltage magnitude (per unit or kV) and angle (degrees)
Line/transformer power flows: P and Q (MW and MVAR)
Generator active and reactive output
Topology processor: breaker/switch states determining bus configuration
Bad data detection and filtering
Convergence status: converged, non-converged, insufficient data
Observability analysis results

Rows1,000 rows10,000 rows100,000 rows1,000,000 rows

Open the blueprint in Data Factory

1 credit per row. Preview 20 rows free. Buy rows for the full run.

Exports: CSV, JSON, JSONL, Parquet, SQL, Excel, TSV, XML
Licence: yours to use, including commercially
API slug: energy-management-system-ems-state-estimation

What should your data show?

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Sample rows

What the 110 rows show

Columns

Use it for

An energy dashboard

A root-cause class exercise

A software demo

Make it yours.

Same schema. As many rows as you need.

More in Energy

What should your data show?