diff --git a/pqs-device/pq-device/pq-device-api/src/main/java/com/njcn/device/pq/pojo/vo/PqSubstationExpendVO.java b/pqs-device/pq-device/pq-device-api/src/main/java/com/njcn/device/pq/pojo/vo/PqSubstationExpendVO.java
new file mode 100644
index 000000000..79716d8d4
--- /dev/null
+++ b/pqs-device/pq-device/pq-device-api/src/main/java/com/njcn/device/pq/pojo/vo/PqSubstationExpendVO.java
@@ -0,0 +1,83 @@
+package com.njcn.device.pq.pojo.vo;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.math.BigDecimal;
+import java.util.Date;
+
+/**
+ * 变电站扩展信息VO
+ *
+ * @Author: cdf
+ * @CreateTime: 2026-07-29
+ * @Description: 变电站扩展信息，含地市和名称
+ */
+@Data
+public class PqSubstationExpendVO implements Serializable {
+
+    /**
+     * 主键（变电站ID）
+     */
+    private String id;
+
+    /**
+     * 负载容量
+     */
+    private BigDecimal loadCap;
+
+    /**
+     * 地址
+     */
+    private String address;
+
+    /**
+     * 最高电压等级
+     */
+    private Integer maxVoltageType;
+
+    /**
+     * 投运日期
+     */
+    private Date operateDate;
+
+    /**
+     * 运行状态
+     */
+    private Integer operateState;
+
+    /**
+     * 所属业主
+     */
+    private String owner;
+
+    /**
+     * 联系电话
+     */
+    private String phoneNo;
+
+    /**
+     * 场站类型
+     */
+    private String plantType;
+
+    /**
+     * 报告附件地址
+     */
+    private String reportUrl;
+
+    /**
+     * 排序
+     */
+    private Integer sort;
+
+    /**
+     * 地市
+     */
+    private String city;
+
+    /**
+     * 名称
+     */
+    private String name;
+}
\ No newline at end of file
diff --git a/pqs-device/pq-device/pq-device-boot/src/main/java/com/njcn/device/pq/mapper/mapping/PqSubstationExpendMapper.xml b/pqs-device/pq-device/pq-device-boot/src/main/java/com/njcn/device/pq/mapper/mapping/PqSubstationExpendMapper.xml
new file mode 100644
index 000000000..b19698951
--- /dev/null
+++ b/pqs-device/pq-device/pq-device-boot/src/main/java/com/njcn/device/pq/mapper/mapping/PqSubstationExpendMapper.xml
@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.njcn.device.pq.mapper.PqSubstationExpendMapper">
+
+    <resultMap id="BaseResultMap" type="com.njcn.device.pq.pojo.po.PqSubstationExpend">
+        <id column="ID" jdbcType="VARCHAR" property="id" />
+        <result column="LOAD_CAP" jdbcType="DECIMAL" property="loadCap" />
+        <result column="ADDRESS" jdbcType="VARCHAR" property="address" />
+        <result column="OPERATE_DATE" jdbcType="TIMESTAMP" property="operateDate" />
+        <result column="OPERATE_STATE" jdbcType="INTEGER" property="operateState" />
+        <result column="OWNER" jdbcType="VARCHAR" property="owner" />
+        <result column="PHONE_NO" jdbcType="VARCHAR" property="phoneNo" />
+        <result column="PLANT_TYPE" jdbcType="VARCHAR" property="plantType" />
+        <result column="REPORT_URL" jdbcType="VARCHAR" property="reportUrl" />
+        <result column="SORT" jdbcType="INTEGER" property="sort" />
+    </resultMap>
+
+    <resultMap id="VOResultMap" type="com.njcn.device.pq.pojo.vo.PqSubstationExpendVO">
+        <id column="ID" jdbcType="VARCHAR" property="id" />
+        <result column="LOAD_CAP" jdbcType="DECIMAL" property="loadCap" />
+        <result column="ADDRESS" jdbcType="VARCHAR" property="address" />
+        <result column="OPERATE_DATE" jdbcType="TIMESTAMP" property="operateDate" />
+        <result column="OPERATE_STATE" jdbcType="INTEGER" property="operateState" />
+        <result column="OWNER" jdbcType="VARCHAR" property="owner" />
+        <result column="PHONE_NO" jdbcType="VARCHAR" property="phoneNo" />
+        <result column="PLANT_TYPE" jdbcType="VARCHAR" property="plantType" />
+        <result column="REPORT_URL" jdbcType="VARCHAR" property="reportUrl" />
+        <result column="SORT" jdbcType="INTEGER" property="sort" />
+        <result column="CITY" jdbcType="VARCHAR" property="city" />
+        <result column="NAME" jdbcType="VARCHAR" property="name" />
+    </resultMap>
+
+    <sql id="joinClause">
+        INNER JOIN pq_substation s ON e.ID = s.id
+        INNER JOIN pq_line l3 ON s.id = l3.id AND l3.level = 3 AND l3.state = 1
+        LEFT JOIN pq_line l2 ON l3.pid = l2.id AND l2.state = 1
+    </sql>
+
+    <sql id="selectColumns">
+        e.*,
+        l2.name AS city,
+        l3.name AS name,
+           s.scale,
+           s.lng,
+           s.lat
+    </sql>
+
+    <sql id="whereClause">
+        <if test="param.id != null and param.id != ''">
+            AND e.ID = #{param.id}
+        </if>
+        <if test="param.name != null and param.name != ''">
+            AND l3.name LIKE '%' || #{param.name} || '%'
+        </if>
+        <if test="param.loadCap != null">
+            AND e.LOAD_CAP = #{param.loadCap}
+        </if>
+        <if test="param.address != null and param.address != ''">
+            AND e.ADDRESS LIKE '%' || #{param.address} || '%'
+        </if>
+        <if test="param.maxVoltageType != null">
+            AND e.MAX_VOLTAGE_TYPE = #{param.maxVoltageType}
+        </if>
+        <if test="param.operateDate != null">
+            AND e.OPERATE_DATE = #{param.operateDate}
+        </if>
+        <if test="param.operateState != null">
+            AND e.OPERATE_STATE = #{param.operateState}
+        </if>
+        <if test="param.owner != null and param.owner != ''">
+            AND e.OWNER LIKE '%' || #{param.owner} || '%'
+        </if>
+        <if test="param.phoneNo != null and param.phoneNo != ''">
+            AND e.PHONE_NO LIKE '%' || #{param.phoneNo} || '%'
+        </if>
+        <if test="param.plantType != null and param.plantType != ''">
+            AND e.PLANT_TYPE = #{param.plantType}
+        </if>
+    </sql>
+
+    <select id="pageJoin" resultMap="VOResultMap">
+        SELECT <include refid="selectColumns" />
+        FROM PQ_SUBSTATION_EXPEND e
+        <include refid="joinClause" />
+        WHERE 1=1
+        <include refid="whereClause" />
+    </select>
+
+    <select id="getByIdVO" resultMap="VOResultMap">
+        SELECT <include refid="selectColumns" />
+        FROM PQ_SUBSTATION_EXPEND e
+        <include refid="joinClause" />
+        WHERE e.ID = #{id}
+    </select>
+
+    <select id="listVO" resultMap="VOResultMap">
+        SELECT <include refid="selectColumns" />
+        FROM PQ_SUBSTATION_EXPEND e
+        <include refid="joinClause" />
+    </select>
+
+</mapper>
\ No newline at end of file